$OpenBSD: patch-CMakeLists_txt,v 1.2 2017/01/14 17:29:45 danj Exp $
--- CMakeLists.txt.orig	Thu Aug 18 07:32:27 2016
+++ CMakeLists.txt	Fri Jan 13 21:20:41 2017
@@ -172,13 +172,6 @@ endif()
 # Find and add Unix math and time libraries
 #--------------------------------------------------------------------
 if (UNIX AND NOT APPLE)
-    find_library(RT_LIBRARY rt)
-    mark_as_advanced(RT_LIBRARY)
-    if (RT_LIBRARY)
-        list(APPEND glfw_LIBRARIES "${RT_LIBRARY}")
-        list(APPEND glfw_PKG_LIBS "-lrt")
-    endif()
-
     find_library(MATH_LIBRARY m)
     mark_as_advanced(MATH_LIBRARY)
     if (MATH_LIBRARY)
